436 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
1. Sommera sabiceoides Schum. in Mart. Fl. Bras. 6°: 300. pl. 133. f. 1. 1889. 
The type was collected by Martius along the River Yapuré, State of Ama- 
zonas, northwestern Brazil. Apparently, it is known only from this single 
collection. 
2. Sommera arborescens Schlecht. Linnaea 9: 602. 1835. 
Type collected by Schiede (no. 272) near the Hacienda de la Laguna, southern 
Mexico. 
ILLUSTRATIONS: Schum. in Engler & Prantl, Pflanzenfam. 4°: f. 26. J, K. 
SPECIMENS EXAMINED: 
Mexico: Hacienda de la Laguna, Schiede 272, type collection. Barranca 
Tenampa, near Zacuapan, Vera Cruz, in damp forests, Purpus 2062. 
3. Sommera guatemalensis Standley, sp. nov. 
Young branches terete or nearly so, succulent, sparingly strigose; stipules 
narrowly lanceolate, 35 to 45 mm. long, long-attenuate, thin, brown, strigose 
along the midvein and margin; petioles 2 to 5 cm. long, strigose; leaf blades 
oblong-obovate to oval, 17 to 32 cm. long, 8 to 14 em. wide, rounded to broadly 
cuneate at the base, abruptly short-acuminate, the tip 15 to 20 mm. long, acute, 
densely strigose on both surfaces when young, in age glabrate on the upper 
surface, strigose beneath with very short hairs; peduncles relatively slender, 
2 to 5 cm. long, many-flowered, the flowers in a rather dense cyme with several 
branches; bracts broadly ovate to oblong, obtuse or abruptly acuminate, thin, 
brown, finely parallel-veined, strigose along the midnerve, ciliate; flowers 
sessile or very shortly pediceled; ovary densely strigose; calyx lobes 3 to 6 
mm. long, unequal, oval to broadly ovate, obtuse or acute, longitudinally nerved, 
finely strigillose on both surfaces; corolla tube 6 to 8 mm. long, densely pubescent 
outside above the calyx, densely villous within above the middle, the lobes one- 
fifth to one-third as long as the tube, triangular-ovate, acute: filaments inserted 
about the middle of the tube, somewhat longer than the oblong anthers; pistil 
stout, pilose above; fruit elongate-spherical, 12 mm. long and 9 or 10 mm. in 
diameter, sparingly strigose, capped with the persistent calyx. 
Type in the U. 8S. National Herbarium, no. 398457, collected near Cubilquitz, 
Department of Alta Verapaz, Guatemala, altitude 350 meters, May. 1902. by 
H. von Tiirckheim (J. D. Smith, no. 8225). 
ADDITIONAL SPECIMENS EXAMINED: 
GUATEMALA: Pansamalfi, Department of Alta Verapaz, alt. 1.140 meters, 
April, 1889, J. D. Smith 1737. 
Distinguished from the other Central American species by the broad bracts 
and the long peduncles, as well as by the large and broad leaves. 
4. Sommera donnell-smithii Standley, sp. nov. 
Branches stout, terete, densely pubescent with long ascending tawny hairs; 
stipules 15 to 20 mm. long, lanceolate or ovate-lanceolate, acuminate, thin, 
brown, strigose along the midvein and margins or glabrate, ciliate; petioles 1 
to 2 cm. long, densely strigose with tawny hairs; leaf blades ovat to oval-obo- 
vate, 11 to 20 cm. long, 5 to 10 cm. wide, abruptly acuminate, the tips 15 to 20 
mm. long, acute, rounded or broadly cuneate at the base, glabrous or remotely 
strigillose on the upper surface, sparingly pubescent beneath with very short 
appressed hairs, strigose-ciliate; peduncles 9 to 12 mm. long, stout, densely pu- 
bescent with tawny, appressed or ascending hairs; cymes many-flowered, with 
several stout divaricate branches, the flowers crowded at the ends of the 
branches, nearly sessile, but the pedicels in fruit 3 to 8 mm. long; bracts lanceo- 
late to lanceovate, acute to attenuate, thin, brown, strigose; ovary densely 
strigose; calyx lobes 3 mm. long or less, broadly oval or oblong, rounded at the 
